<?php

class Session {

    public $data = array();

    public function __construct() {
        if (!session_id()) {
            ini_set('session.use_cookies', 'On');
            ini_set('session.use_trans_sid', 'Off');
            
          // session.save_path = /tmp/php_sessions;
           session_set_cookie_params(0, rtrim(dirname($_SERVER['PHP_SELF'])), '.' . str_replace('www.', '', $_SERVER['HTTP_HOST']));
            // session_set_cookie_params(0,"/");
            session_start();
        }

        $this->data = & $_SESSION;
    }

}

?>